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An Assessment of Water Color for Inland Water in China Using a Landsat 8-Derived Forel鈥揢le Index and the Google Earth Engine Platform
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ( IF 4.7 ) Pub Date : 2021-06-01 , DOI: 10.1109/jstars.2021.3085411 Xidong Chen , Liangyun Liu , Xiao Zhang , Junsheng Li , Shenglei Wang , Dong Liu , Hongtao Duan , Kaishan Song
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ( IF 4.7 ) Pub Date : 2021-06-01 , DOI: 10.1109/jstars.2021.3085411 Xidong Chen , Liangyun Liu , Xiao Zhang , Junsheng Li , Shenglei Wang , Dong Liu , Hongtao Duan , Kaishan Song
This article investigates factors affecting the contributions of battery units to fault currents in grid-connected battery storage systems (BSSs). The work in this article is intended to examine the effects of the state-of-charge (SOC) on battery currents that are drawn due to faults. This article also examines the impacts of charger controller actions on the currents drawn from battery units to faults in grid-connected BSSs. The impacts of the SOC and charger controller on battery currents due to faults are examined for the lead-acid, lithium-ion, and nickel–cadmium battery units. Examination results show that the battery currents due to faults are directly dependent on the SOC. Moreover, these results show that actions of charger controller can support the battery terminal voltage, thus preventing the fast reduction of the SOC. The support of the battery terminal voltage helps in limiting the currents drawn from battery units during faults. The effects of the SOC and charger controller are verified using a 1-MW, [Math Processing Error]3\phi grid-connected BSS, which has lead-acid battery units. Several faults have been created during charging and discharging operations, and at different values of SOC. Test results confirm the direct dependence of battery currents (due to faults) on the SOC. In addition, obtained results demonstrate the ability of charger controller to limit the currents drawn from battery units due to faults in different parts of a grid-connected BSS.
更新日期：2021-06-01
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